At the power plant I worked out they had a scrap wood pile where they discarded pallets and packing wood to burn later. I hunted the place looking for special wood but only found a few notable pieces. I found every species but my best finds were pieces of very curly maple, walnut and a 6' 4x4 of very clear ash.
I once had a wife that worked in a huge sawmill where they culled substandard wood they called "dunnage" and sent it to the pallet factories.